Cus·tom n.
 1. Frequent repetition of the same act; way of acting common to many; ordinary manner; habitual practice; usage; method of doing or living.
    And teach customs which are not lawful.   --Acts xvi. 21.
    Moved beyond his custom, Gama said.   --Tennyson.
 A custom
 More honored in the breach than the observance.   --Shak.
 2. Habitual buying of goods; practice of frequenting, as a shop, manufactory, etc., for making purchases or giving orders; business support.
    Let him have your custom, but not your votes.   --Addison.
 3. Law Long-established practice, considered as unwritten law, and resting for authority on long consent; usage. See Usage, and Prescription.
 Note: ☞ Usage is a fact. Custom is a law. There can be no custom without usage, though there may be usage without custom.
 4. Familiar aquaintance; familiarity. [Obs.]
 Age can not wither her, nor custom stale
 Her infinite variety.   --Shak.
 Custom of merchants, a system or code of customs by which affairs of commerce are regulated.
 General customs, those which extend over a state or kingdom.
 Particular customs, those which are limited to a city or district; as, the customs of London.
 Syn: -- Practice; fashion. See Habit, and Usage.